| 摘要 |
<p>A control (14) having a primary work system (16), a secondary work system (18), a first fluid flow generating system (20), and a second fluid flow generating system (22). A control signal delivering device (92) is provided to deliver a control signal having a magnitude responsive to relative location of a control valve (56) between a first and second position of a control valve. A control signal receiving device (104) receives the control signal and separately controls the flow rate deliverable from the first and second flow generating system (20, 22) in response to the magnitude of the control signal received. The control signal receiving device (104) has a set point value which is representative of a preselected magnitude of the received control signal.</p> |
